Middle Ear Fluid Detection via Trans-Tympanic Optical Reflectance
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Solution Overview
Problem
Current methods for assessing middle ear fluid presence, such as otoscopy and tympanometry, are limited in diagnostic accuracy and depend on practitioner experience, often leading to incorrect diagnoses and unnecessary antibiotic use.
Innovation Solution
A device with an elongated probe and dual light sources, including a first light source to convey an optical beam through the tympanic membrane without puncturing it, creating a reflectance pattern that indicates the presence of abnormal fluid, enhancing diagnostic accuracy and ease of use.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If tympanometry is used to assess middle ear fluid presence, then compliance measurement is obtained, but diagnostic accuracy is limited and tight seal is difficult to obtain in young children
Solution Approach 1:
The patent replaces the mechanical tympanometry system with an optical system. Instead of measuring compliance through pressure changes and mechanical probe placement, the invention uses light transmission through the tympanic membrane to detect fluid presence. This substitution eliminates the need for tight seal achievement while providing more accurate diagnostic information about middle ear contents.
Solution Approach 2:
The patent utilizes optical properties and light interaction with the tympanic membrane to detect fluid. By analyzing how light transmits through or reflects from the membrane, the system can identify fluid presence based on optical characteristic changes, providing accurate diagnosis without mechanical constraints.
2Ease of operation
If otoscopy is used to assess middle ear fluid presence, then examination is performed, but diagnostic accuracy is limited and dependent on practitioner experience
Solution Approach 1:
The patent enhances traditional otoscopy by incorporating an optical measurement system. Instead of relying solely on practitioner visual assessment, the device objectively measures light transmission characteristics through the tympanic membrane, eliminating subjectivity while maintaining procedural simplicity.
Solution Approach 2:
The device performs self-diagnosis through automated optical measurement and analysis. The system independently evaluates light transmission patterns to determine fluid presence, reducing dependence on practitioner experience while keeping the examination process simple and straightforward.
3Measurement precision
If optical beam is conveyed through tympanic membrane, then fluid presence is detected via reflectance pattern, but risk of puncturing membrane exists
Solution Approach 1:
The patent uses a low-power optical beam that delivers sufficient light for accurate measurement without reaching puncture thresholds. The system employs partial action by using only the minimal necessary optical energy required for detection, well below the level that would cause tissue damage or membrane puncture.
Solution Approach 2:
The optical beam serves as an intermediary that indirectly detects fluid presence through light transmission and reflectance patterns rather than direct physical contact or high-energy intervention. This intermediary approach allows accurate measurement without applying harmful forces to the delicate tympanic membrane.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The device significantly improves diagnostic accuracy for middle ear fluid detection, reducing false-negative diagnoses and associated costs by providing a simple, cost-effective method for medical practitioners to determine fluid presence, thereby aiding in correct treatment.
Implementation Method 1
The first light source is activated to convey an optical beam through the tympanic membrane, without puncturing the tympanic membrane. The conveyed optical beam creates a reflectance pattern associated with the tympanic membrane.
Data Source
AI summary
A device for determining the presence of abnormal fluid in a middle ear of a subject includes an elongated probe, a first light source housed within the elongated probe, and a second light source housed within the elongated probe. The elongated probe includes a distal end for inspection of an ear. The First light source is configured to convey an optical beam through a tympanic membrane associated with the middle ear of the subject, without puncturing the tympanic membrane. The second light source is configured to convey light through the distal end of the elongated probe and illuminate the tympanic membrane.